Well machinery.



M. HALL. WELL MACHINERY. GATION FILED JAN.3

0, 1913. 1,083,089. Patented Dec. 30,1913.

MAJOR HALL, or BOISE, IDAHO.

WELL MACHINERY.

Specification of Letters Patent.

Application filed January 30, 1913.

Patented Dec. 30,1913.

Serial No. 745,277.

To all whom it may concern Be it known that I, MAJOR HALL, a citizen of the United States, residing at Boise, in the county of Ada and State of Idaho, have invented certain new and useful Improvements in Well Machinery, of which the following is a specification.

My invention relates to improvements in well machinery, and refers particularly to an improved type of cable well-drilling tools, the main object being the provision of a cable-drilling tool which will allow the water and cuttings to pass upward around the tool and upon the lifting of the tool from the ground, permit the liquid or water and cuttings to enter and be discharged through the tool, thus permitting the tool to rapidly effect the drilling operation and at the same time prevent interference by reason of the cuttings.

Another object of my invention is the provision of a cable-operated well-drilling tool which will effect a rapid and perfect boring or drilling and as the cuttings are gathered will cause such cuttings to be carried upward away from the bit to permit the easy and ready operation of the bit free from interference, and also to provide a well-drilling tool which will be of simple, durable, inexpensive and practical construction.

With these objects in view my invention consists of a cable-operating well-drilling tool, embodying novel features of construction, combination and adaptation of parts substantially as disclosed herein.

In order that the construction in detail and the operation of my improvement may be fully understood, and its numerous advantages be appreciated, I have illustrated in the accompanying drawings an embodiment of my invention, it being understood that I reserve the right to make such changes in the construction of my improvement as come within the scope of my invention.

Figure 1 represents a side elevation of a cable-operated well-drilling tool constructed in accordance with and embodying my invention. Fig. 2 represents a vertical sectional view of the well-drilling tool shown on an enlarged scale to more clearly show the detail of construction. Fig. 3 represents an end view of the auger or bit. Fig. 4 is a perspective view of part of the drill. Fig. 5 is a similar view looking at the opposite side of the drill.

Referring by letter to the drawings in which similar letters of reference are employed to denote corresponding parts in the five views:

The letter A designates the auger or bit which has the corrugated flaring lower portion B, forming the cutting edges G, and has the upper reduced tubular or hollow portion D, provided with the tapered or beveled shoulder E, and the contiguous interiorly threaded stem F.

Any style of cable well-drilling bit may be used with my invention, but I provide a bit with cutting edge of special design so arranged or shaped that it crosses the last place it has cut on the bottom with each revolution of the tool, thus permitting of thinner cutting edge, at the same time by reason of its peculiar shape, obviating the danger of fissuring, or making a flat hole, which is of great importance. As the tool cuts its way into the ground the cuttings are carried upward around the outside of the stem or bar, and are there disintegrated and mixed by the agitation, thus allowing clearance on the bottom for the bit to do rapid work free from interference. The bit is also provided with a central vertical channel which is in communication with the central tubular portion of the bit by reason of the tubular passage G, and also opposite side channels, which flare or open outward i form the outer cutting edges as at C,

To the, threaded stem of the bit or auger is connected the lower threaded end H, of

the hollow drill bar J, which at its upper end is provided with screw threads L, and the upper and lower edges of the hollow main connection bar are beveled as at M, to make a snug and strong joint. This hollow connecting bar is of any length and by reason of its tubular or hollow construction can be made any diameter desired without adding too greatly to its weight, in order that, in large wells, the space between the stem and the walls of the well may be restricted sufficiently to promote the agitation necessary to disintegrate and mix the cuttings above the bit or auger.

To the upper threaded end of the hollow connecting bar is secured the reduced portion N, of the solid cap 0, which is provided with the restricted square upper portion P, for receiving a wrench or implement, and also provided with a series of entrance openings Q, this square portion is formed with the enlarged cylindrical portion Q, and has the restricted portion R, provided with the exterior threads R, for the purpose of receiving a suitable cable attachment. This solid cap is formed with an opening which is bored upward from the bottom of the cap and intersects a series of openings Q, at S.

The reduced portion N of the cap is proscribed, consisting of a bit or auger havlng vided with a valve U, which is normally closed and is hinged or otherwise retained at V, being held there by the spring W, which exerts its tension upward and normally retains the valve in closed condition.

In operation the tool being attached to the cable in the usual manner is lowered to the bottom of the well, and being submerged in water is lifted and dropped on the bottom; As the tool is being lifted a vacuum is formed on the bottom, to compensate for which water is drawn downward through the tool and out through the opening in the bit, the valve opening automatically for its passage. lVhen the tool reaches the limit of upward movement the pressure being released on the valve, it closes automatically.

The downward movement or drop of the tool forces the water and cuttings up and around the outside of the stem or bar. This operation of the tool being repeated With great rapidity it will be seen a circulation is established down through the tool and upward around the outside of the stem or bar, thus clearing the bottom and affording a new surface for the bit to out free frominterference. When the drilling operation has been continued sufliciently long, or until the tool begins to lag by reason of the sludge around the tool it is run up in the derrick and a sand pump or Ioailer is lowered and the hole cleaned out. This completes the work or operation of one run.

It will thus be seen that I provide a drilling tool which will effect the boring or drilling in a rapid and perfect manner without Copies of this patent may be obtained for 7 remove the tools.

the necessity of having very frequently to Also that the tool will automatically clear the accumulation away from the bit or auger and that generally theimprovement will prove economical, effi- I cient and practical from every point of view.

I claim: 1'. In' a well-drilling tool of the class clea tubular upper portion, a cap having an entrance opening and a controlling valve, and a hollow r od connecting the cap and the tubular portion of the bit.

2; A; well -drillingtool, consisting of a cap having-mea-nsfor connecting with a cable, and provided with entrance opening and a discharge opening, a hollow connecting rod secured to said cap, a valve carried by said rod and controlling the discharge opening of the cap, and a tubular bit or auger secured to the lower end of said hollow connecting rodi 3. A well-drilling tool, consisting of the cap formed with a stud for connection with the cable, and provided with entrance and discharge opening, a hollow rod having its upper end connected to the discharge end of said cap, a spring-actuated valve for normally closing the discharge opening of the sleeve, a bit or auger having an upper hollow or tubular portion secured to the lower end of the hollow connecting rod and having a flared lower portion provided 'Wlt-ll cutting edges and wlth a central channel communieating with the tubular portion thereof and with-"a pair of side channels leading to the reduced portion of said bit or auger.

Intestimony whereof I afliX my s gnature in presence of two witnesses.

MAJ OR HALL.

Witnesses:

T. F. HALvEsToN, JOHN DALY.

five cents each, by adiiressing the Commissioner of Patents, Washington, DL 02 

